[libdw] stop cc from complainingwip/angerman/fix-warning

1 files changed, 8 insertions, 1 deletions

diff --git a/rts/Libdw.c b/rts/Libdw.c
index d45d9d0e5d..c0d7c9a4b1 100644
--- a/rts/Libdw.c
+++ b/rts/Libdw.c
@@ -133,8 +133,15 @@ int libdwLookupLocation(LibdwSession *session, Location *frame,
     Dwfl_Module *mod = dwfl_addrmodule(session->dwfl, addr);
     if (mod == NULL)
         return 1;
+
+    // avoid unaligned pointer value
+    // Using &frame->object_file as argument to dwfl_module_info leads to
+    //
+    //   error: taking address of packed member of ‘struct Location_’ may result in an unaligned pointer value [-Werror=address-of-packed-member]
+    //    
+    void *object_file = &frame->object_file;
     dwfl_module_info(mod, NULL, NULL, NULL, NULL, NULL,
-                     &frame->object_file, NULL);
+                     object_file, NULL);
 
     // Find function name
     frame->function = dwfl_module_addrname(mod, addr);